When we select any size the disable size get enabled in quick shop add to cart button on product.
Please check this in below given ref link:
https://chkokko.com/collections/men-polo
Men’s Regular Fit Polo T-Shirt With Pocket (open this name product)
{% assign id_form = id | append: '-' | append: product.id %}
{% for option in product.options_with_values %}
{% assign option_name = option.name | downcase %}
{% assign option_color_swatch = settings.option_color_swatch | downcase %}
{% if settings.use_color_swatch %}
{% if option_color_swatch contains option_name %}
#snackbar {
visibility: hidden;
min-width: 250px;
margin-left: -125px;
background-color: #333;
color: #fff;
text-align: center;
border-radius: 2px;
padding: 16px;
position: fixed;
z-index: 1;
left: 50%;
top: 60px;
font-size: 17px;
}
#snackbar.show {
visibility: visible;
-webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
animation: fadein 0.5s, fadeout 0.5s 2.5s;
}
@-webkit-keyframes fadein {
from {top: 0; opacity: 0;}
to {top: 60px; opacity: 1;}
}
@keyframes fadein {
from {top: 0; opacity: 0;}
to {top: 60px; opacity: 1;}
}
@-webkit-keyframes fadeout {
from {top: 60px; opacity: 1;}
to {top: 0; opacity: 0;}
}
@keyframes fadeout {
from {top: 60px; opacity: 1;}
to {top: 0; opacity: 0;}
}
{{ option.name }}: {{ option.selected_value }}
{% assign option_index0 = forloop.index0 %}
{% assign option_index = forloop.index %}
{% assign values = '' %}
{% for variant in product.variants %}
{% assign value = variant.options[option_index0] %}
{% unless values contains value %}
{% assign values = values | join: ';' %}
{% assign values = values | append: ';' | append: value %}
{% assign values = values | split: ';' %}
{% assign value_2 = value | remove: " " | downcase %}
{% else %}
{% if variant.image != blank %}![]()
{% endif %}
{% endunless %}
{% endfor %}
{{ option.name }}: {{ option.selected_value }}
{% assign option_index0 = forloop.index0 %}
{% assign option_index = forloop.index %}
{% assign values = '' %}
{% endif %}
{% else %}
{% for variant in product.variants %}
{% assign value = variant.options[option_index0] %}
{% unless values contains value %}
{% assign values = values | join: ‘;’ %}
{% assign values = values | append: ‘;’ | append: value %}
{% assign values = values | split: ‘;’ %}
{% assign value_2 = value | remove: " " | downcase %}
{{ value }}
{% endunless %}
{% endfor %}
{{ option.name }}: {{ option.selected_value }}
{% endif %}
{% endfor %}
{% comment %} {{ 'products.general.submit' | t }} {% endcomment %}
ADD TO CART
{{ 'products.general.cancel' | t }}
✓ Added in cart..